2019
DOI: 10.1016/j.microc.2019.104256
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Monitoring metal ion leaching in oil-ZnO paint systems with a paramagnetic probe

Abstract: Zinc oxide (ZnO), used as a pigment since the 19 th C., is highly reactive when mixed with drying oils. Indeed, the combination of metal-based pigments and drying oils may react to form metal complexes in paint, which may lead to the aggregation of metal carboxylates or soaps. Whereas the mechanism and chemistry behind metal soap formation has been studied in depth, little research has focused on the changes that affect the inorganic pigment particles. In this work, we concentrate on the first phase of these r… Show more

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Cited by 5 publications
(2 citation statements)
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“…In previous works, we showed how the photoluminescence signal of zinc white changes when the pigment is dispersed in an oil-based binding medium, and we associated these variations with the reactivity of the ZnO surface to adsorb carboxylic acids of the drying oil [20,21]. These outcomes highlighted that the chemical-physical interaction of the pigment with its micro-environment, as well as the metal ion leaching mechanisms, are determined by the presence of crystal defects in the oxide [22]. Inspired by these results, the present research concentrates on the relationships between the crystalline structure and the photocatalytic effect of zinc white from different contemporary manufacturers.…”
Section: Introductionmentioning
confidence: 68%
“…In previous works, we showed how the photoluminescence signal of zinc white changes when the pigment is dispersed in an oil-based binding medium, and we associated these variations with the reactivity of the ZnO surface to adsorb carboxylic acids of the drying oil [20,21]. These outcomes highlighted that the chemical-physical interaction of the pigment with its micro-environment, as well as the metal ion leaching mechanisms, are determined by the presence of crystal defects in the oxide [22]. Inspired by these results, the present research concentrates on the relationships between the crystalline structure and the photocatalytic effect of zinc white from different contemporary manufacturers.…”
Section: Introductionmentioning
confidence: 68%
“…It should be noted that Ni 2+ might form a complex with R1 in spirolactam ring opening form, which is responsible for the UV-vis spectral change, while is non-emissive due to the paramagnetism effect of Ni 2+ . [35] However, in the case of Cu 2+ , the intermediate complex between Cu 2+ and R1 is not stable enough, which occurred a hydrolysis process under the tested condition to produce highly emissive rhodamine B (side infra), according to the fluorescence enhancement. 2+ and blank.…”
Section: Introductionmentioning
confidence: 99%